SANTOSH CLASSES
(WHERE EXCELLENCE MEETS EXPERIENCE)
(MATA MANDIR ROAD, KASHIPUR (U.S.NAGAR)
(MOB NO. :- 7248637086,8937949381)
CLASS :- 11th
SUBJECT :- PHYSICS
CHAPTER:- LAWS OF MOTION
ASSIGNMENT :- JEE MAINS, NEET, CUET
● OBJECTIVE TYPE QUESTIONS
1) A block of mass 1 kg starts from rest at x = 0 and moves along the X-axis under the action of a force F = kt, where t
is time and k = 1 m/s. The distance the block will travel in 6 seconds is
(a) 36 m (b) 72 m (c) 108 m (d) 18 m
2) Two weight w1 and w2 are suspended to the two ends of a string on a frictionless pulley. When the pulley is pulled
up with an acceleration g, then the tension in the string is
𝒘𝟏 +𝒘𝟐 𝒘𝟏 𝒘𝟐 𝟐𝒘𝟏 𝒘𝟐 𝟒𝒘𝟏 𝒘𝟐
(a) (b) (c) (d)
𝟐 𝒘𝟏 +𝒘𝟐 𝒘𝟏 +𝒘𝟐 𝒘𝟏 +𝒘𝟐
3) Three equal weights of 3 kg each are hanging on a string passing over a frictionless pulley as shown in the figure.
The tension in the string between masses II and III will be ( take g = 10 m/s2 )
(a) 5 N (b) 6 N (c) 10 N (d) 20 N
4) Two masses M1 = 5 kg and M2 = 10 kg are connected at the ends of an inextensible string over a frictionless pulley
as shown. When the masses are released, then the acceleration of the masses will be
(a) g (b) g/2 (c) g/3 (d) g/4
5) Refer figure shown. All the surfaces are frictionless. The string are mass less and inextensible. The ratio of T 1 and
T2 is 2
T1 10 kg
T2 12 kg 37°
kg
(a) 1: 5 (b) 5 :1 (c) 1: 1 (d) 6:1 (d) 1 : 6
6) A block is kept on a frictionless inclined plane with angle of inclination 𝜽. The incline is given an acceleration a to
keep the block stationary. Then a is equal to
𝜃 a
𝜃
𝒈
(a) g (b) g 𝐭𝐚𝐧 𝜽 (c) (d) g 𝐜𝐨𝐬𝐞𝐜 𝜽
𝐭𝐚𝐧 𝜽
, 7) Three blocks of masses m1,m2 and m3 are connected by mass less string as shown on a friction less table. They are
pulled with a force T3 = 40 N . If m1 = 10 kg , m2 = kg and m3 =4 kg, then tension T2 will be
M1 T1 M2 T2 M3 T3
(a) 20 N (b) 40 N (c) 10 N (d) 32 N
8) A ball of mass 0.2 kg is thrown vertically upward by applying a force by hand. If the hand moves 0.2 m while
applying the force and the ball goes upto 2 m height further, find the magnitude of the force. Take g = 10 m/s 2
(a) 4 N (b) 20 N (c) 22 N (d) 16 N
9) A body of masses 3.513 kg is moving along x axis with a speed of 5.00 m/s. The magnitude of momentum is
(a) 6 kg m/s (b) 2/3 kg m/s (c) 3/2 kg m/s (d) zero
10) Two fixed frictionless inclined planes making angles 30° 𝒂𝒏𝒅 𝟔𝟎° with the vertical are shown in the figure. Two
blocks A and B are placed on the two plane A B
What is the relative vertical acceleration of A
With respect to B ? 60° 30°
(a) 4.9 m/s2 in vertical direction
(b) 4.9 m/s2 in horizontal direction (c) 9.8 m/s2 in vertical direction (d) zero
11) Masses M and m on a pulley moves 0.6 m in 4s. What is the ratio m/M ? a
(a) 55/57 (b) 49/50
(c) 57/55 (d) 117/113
m
M
12) A train is moving along a horizontal track. A pendulum suspended from the roof makes an angle of 10° with the
vertical. The acceleration of the train is ( Assume g = 10 m/s2 ). Take 𝐭𝐚𝐧 𝟏𝟎° = 0.1763 )
(a) 1.0 m/s2 (b) 2.0 m/s2 (c) 1.73 m/s2 (d) 9.8 m/s2
13) Three blocks with masses m, 2m and 3m are connected by string as shown in figure. After an upward force F is
applied on block m, the masses moves upward at constant speed v. What is the net force on the block of mass 2m?
( g is the acceleration due to gravity ) F v
m
(a) Zero (b) 2 mg
(c)3 mg (d) 6 mg
2m
3m
14) A balloon with mass m is descending down With an acceleration a ( where a < g . How much masses should be
removed from it so that it starts moving up with an acceleration a ?
𝒎𝒂 𝒎𝒂 𝟐𝒎𝒂 𝟐𝒎𝒂
(a) 𝒈+𝒂 (b) 𝒈−𝒂 (c) 𝒈+𝒂
(d) 𝒈−𝒂
15) Three blocks A , B and C of masses 4 kg, 2 kg and 1 kg. are in connected on a frictionless surface as shown. If a
force of 14 N applied on the 4 kg block then the contact force between A and B is –
(a) 6 N (b) 8 N 14 N
(c) 18 N (d) 2 N A
B
C
(WHERE EXCELLENCE MEETS EXPERIENCE)
(MATA MANDIR ROAD, KASHIPUR (U.S.NAGAR)
(MOB NO. :- 7248637086,8937949381)
CLASS :- 11th
SUBJECT :- PHYSICS
CHAPTER:- LAWS OF MOTION
ASSIGNMENT :- JEE MAINS, NEET, CUET
● OBJECTIVE TYPE QUESTIONS
1) A block of mass 1 kg starts from rest at x = 0 and moves along the X-axis under the action of a force F = kt, where t
is time and k = 1 m/s. The distance the block will travel in 6 seconds is
(a) 36 m (b) 72 m (c) 108 m (d) 18 m
2) Two weight w1 and w2 are suspended to the two ends of a string on a frictionless pulley. When the pulley is pulled
up with an acceleration g, then the tension in the string is
𝒘𝟏 +𝒘𝟐 𝒘𝟏 𝒘𝟐 𝟐𝒘𝟏 𝒘𝟐 𝟒𝒘𝟏 𝒘𝟐
(a) (b) (c) (d)
𝟐 𝒘𝟏 +𝒘𝟐 𝒘𝟏 +𝒘𝟐 𝒘𝟏 +𝒘𝟐
3) Three equal weights of 3 kg each are hanging on a string passing over a frictionless pulley as shown in the figure.
The tension in the string between masses II and III will be ( take g = 10 m/s2 )
(a) 5 N (b) 6 N (c) 10 N (d) 20 N
4) Two masses M1 = 5 kg and M2 = 10 kg are connected at the ends of an inextensible string over a frictionless pulley
as shown. When the masses are released, then the acceleration of the masses will be
(a) g (b) g/2 (c) g/3 (d) g/4
5) Refer figure shown. All the surfaces are frictionless. The string are mass less and inextensible. The ratio of T 1 and
T2 is 2
T1 10 kg
T2 12 kg 37°
kg
(a) 1: 5 (b) 5 :1 (c) 1: 1 (d) 6:1 (d) 1 : 6
6) A block is kept on a frictionless inclined plane with angle of inclination 𝜽. The incline is given an acceleration a to
keep the block stationary. Then a is equal to
𝜃 a
𝜃
𝒈
(a) g (b) g 𝐭𝐚𝐧 𝜽 (c) (d) g 𝐜𝐨𝐬𝐞𝐜 𝜽
𝐭𝐚𝐧 𝜽
, 7) Three blocks of masses m1,m2 and m3 are connected by mass less string as shown on a friction less table. They are
pulled with a force T3 = 40 N . If m1 = 10 kg , m2 = kg and m3 =4 kg, then tension T2 will be
M1 T1 M2 T2 M3 T3
(a) 20 N (b) 40 N (c) 10 N (d) 32 N
8) A ball of mass 0.2 kg is thrown vertically upward by applying a force by hand. If the hand moves 0.2 m while
applying the force and the ball goes upto 2 m height further, find the magnitude of the force. Take g = 10 m/s 2
(a) 4 N (b) 20 N (c) 22 N (d) 16 N
9) A body of masses 3.513 kg is moving along x axis with a speed of 5.00 m/s. The magnitude of momentum is
(a) 6 kg m/s (b) 2/3 kg m/s (c) 3/2 kg m/s (d) zero
10) Two fixed frictionless inclined planes making angles 30° 𝒂𝒏𝒅 𝟔𝟎° with the vertical are shown in the figure. Two
blocks A and B are placed on the two plane A B
What is the relative vertical acceleration of A
With respect to B ? 60° 30°
(a) 4.9 m/s2 in vertical direction
(b) 4.9 m/s2 in horizontal direction (c) 9.8 m/s2 in vertical direction (d) zero
11) Masses M and m on a pulley moves 0.6 m in 4s. What is the ratio m/M ? a
(a) 55/57 (b) 49/50
(c) 57/55 (d) 117/113
m
M
12) A train is moving along a horizontal track. A pendulum suspended from the roof makes an angle of 10° with the
vertical. The acceleration of the train is ( Assume g = 10 m/s2 ). Take 𝐭𝐚𝐧 𝟏𝟎° = 0.1763 )
(a) 1.0 m/s2 (b) 2.0 m/s2 (c) 1.73 m/s2 (d) 9.8 m/s2
13) Three blocks with masses m, 2m and 3m are connected by string as shown in figure. After an upward force F is
applied on block m, the masses moves upward at constant speed v. What is the net force on the block of mass 2m?
( g is the acceleration due to gravity ) F v
m
(a) Zero (b) 2 mg
(c)3 mg (d) 6 mg
2m
3m
14) A balloon with mass m is descending down With an acceleration a ( where a < g . How much masses should be
removed from it so that it starts moving up with an acceleration a ?
𝒎𝒂 𝒎𝒂 𝟐𝒎𝒂 𝟐𝒎𝒂
(a) 𝒈+𝒂 (b) 𝒈−𝒂 (c) 𝒈+𝒂
(d) 𝒈−𝒂
15) Three blocks A , B and C of masses 4 kg, 2 kg and 1 kg. are in connected on a frictionless surface as shown. If a
force of 14 N applied on the 4 kg block then the contact force between A and B is –
(a) 6 N (b) 8 N 14 N
(c) 18 N (d) 2 N A
B
C
