1
yakeen neet 2.0 2026
Laws of Motion Assignment-04
By: M.R. Sir
1. A man thinks about 4 arrangements as shown to 3. Figure shows a rod of length l resting on a wall and
raise two small bricks each having mass m. Which the floor. Its lower end A is pulled towards left with
of the arrangement would take minimum time? a constant velocity u. As a result of this, end B starts
moving down along the wall. Find the velocity of
the other end B downward when rod makes an angle
with the horizontal.
(1)
(2)
(3) (1) 2u sin
(2) u sin
(3) u cot
(4) 2u cos
(4)
4. In figure, a ball of mass m1 and a block of mass m2
are joined together with an inextensible string. The
2. Two blocks, each having mass M, rest on ball can slide on a smooth horizontal surface. If v1
frictionless surfaces as shown in the figure. If the and v2 are the respective speeds of the ball and the
pulleys are light and frictionless, and M on the v
incline is allowed to move down, then the tension in block, Find 1 .
v2
the string will be
2
(1) Mg sin
3
(1) cos
3
(2) Mg sin
2 (2) sec
Mg sin (3) tan
(3)
2
(4) sin
(4) 2 Mg sin
, 2
10. Two monkeys (1) and (2) of same mass m = 1 kg are
Paragraph for (Q.5 to 8) hanging on the strings such that block of mass 2 kg
The magnitude of the net force exerted in the x remains at rest and it is given that monkey (2) is just
direction on a 2.50-kg particle varies with time as holding the string. Then which of the following
shown in Figure. statement(s) are CORRECТ (g = 10 m/s2):
5. Find the impulse of the force
(1) 10 Ns (2) 12 Ns (1) Acceleration of monkey (2) is 10 m/s2 upwards.
(3) 15 Ns (4) 8 Ns (2) Acceleration of monkey (1) is 30 m/s2 upwards.
(3) Acceleration of monkey (1) with respect to his
6. Find the final velocity the particle attains if it is rope is 35 m/s2 upwards.
originally at rest (4) Acceleration of monkey (2) with respect to his
–1 –1
(1) 4.8 ms (2) 4.5 ms rope is 50 m/s2 upwards.
–1
(3) 4 ms (4) 5 ms–1
11. In the arrangement, shown below pulleys are
7. Find its final velocity if its initial velocity is massless and frictionless and threads are
–2.0 ms–1 inextensible, block of mass m1 may remain at rest if
(1) 2.60 m/sec (2) 2.50 m/sec
(3) 2.85 m/sec (4) 2.80 m/sec
8. Find the average force exerted on the particle for the
time interval between 0 and 5 s.
(1) 2 N (2) 2.1 N
(3) 2.4 N (4) 1 N
9. x-t curve for a ball of mass 100 gm is shown in 4 1 1
(1) = +
figure. m1 m2 m3
m1
(2) = m2 = m3
2
1 1 1
(3) = +
m1 m2 m3
1 2 3
Calculate impulse received by the ball at t = 2 sec. (4) = +
m1 m2 m3
(1) –2 (2) –2.5
(3) 2.5 (4) 2
yakeen neet 2.0 2026
Laws of Motion Assignment-04
By: M.R. Sir
1. A man thinks about 4 arrangements as shown to 3. Figure shows a rod of length l resting on a wall and
raise two small bricks each having mass m. Which the floor. Its lower end A is pulled towards left with
of the arrangement would take minimum time? a constant velocity u. As a result of this, end B starts
moving down along the wall. Find the velocity of
the other end B downward when rod makes an angle
with the horizontal.
(1)
(2)
(3) (1) 2u sin
(2) u sin
(3) u cot
(4) 2u cos
(4)
4. In figure, a ball of mass m1 and a block of mass m2
are joined together with an inextensible string. The
2. Two blocks, each having mass M, rest on ball can slide on a smooth horizontal surface. If v1
frictionless surfaces as shown in the figure. If the and v2 are the respective speeds of the ball and the
pulleys are light and frictionless, and M on the v
incline is allowed to move down, then the tension in block, Find 1 .
v2
the string will be
2
(1) Mg sin
3
(1) cos
3
(2) Mg sin
2 (2) sec
Mg sin (3) tan
(3)
2
(4) sin
(4) 2 Mg sin
, 2
10. Two monkeys (1) and (2) of same mass m = 1 kg are
Paragraph for (Q.5 to 8) hanging on the strings such that block of mass 2 kg
The magnitude of the net force exerted in the x remains at rest and it is given that monkey (2) is just
direction on a 2.50-kg particle varies with time as holding the string. Then which of the following
shown in Figure. statement(s) are CORRECТ (g = 10 m/s2):
5. Find the impulse of the force
(1) 10 Ns (2) 12 Ns (1) Acceleration of monkey (2) is 10 m/s2 upwards.
(3) 15 Ns (4) 8 Ns (2) Acceleration of monkey (1) is 30 m/s2 upwards.
(3) Acceleration of monkey (1) with respect to his
6. Find the final velocity the particle attains if it is rope is 35 m/s2 upwards.
originally at rest (4) Acceleration of monkey (2) with respect to his
–1 –1
(1) 4.8 ms (2) 4.5 ms rope is 50 m/s2 upwards.
–1
(3) 4 ms (4) 5 ms–1
11. In the arrangement, shown below pulleys are
7. Find its final velocity if its initial velocity is massless and frictionless and threads are
–2.0 ms–1 inextensible, block of mass m1 may remain at rest if
(1) 2.60 m/sec (2) 2.50 m/sec
(3) 2.85 m/sec (4) 2.80 m/sec
8. Find the average force exerted on the particle for the
time interval between 0 and 5 s.
(1) 2 N (2) 2.1 N
(3) 2.4 N (4) 1 N
9. x-t curve for a ball of mass 100 gm is shown in 4 1 1
(1) = +
figure. m1 m2 m3
m1
(2) = m2 = m3
2
1 1 1
(3) = +
m1 m2 m3
1 2 3
Calculate impulse received by the ball at t = 2 sec. (4) = +
m1 m2 m3
(1) –2 (2) –2.5
(3) 2.5 (4) 2
