Newton's Second Law
Trending Questions
Q.
Initially, the block of mass is at rest on a frictionless floor and the spring is in relaxed condition A constant force is applied on the block as shown in the figure. The maximum velocity of the block is:
Q. If mass of A=10 kg , coefficient of static friction= 0.2, coefficient of kinetic friction = 0.2. The mass of B is 20 kg. Find acceleration of masses
- 6 m/s2
- 7 m/s2
- 8 m/s2
- 9 m/s2
Q. A fireman of mass 60 kg slides down a pole. He is pressing the pole with a force of 600 N. The coefficient of friction between the hands and the pole is 0.5, with what acceleration will the fireman slide down (g=10 m/s2)
- 1 m/s2
- 2.5 m/s2
- 10 m/s2
- 5 m/s2
Q. Two blocks are connected over a massless pulley as shown in the figure. The mass of block A is 10 kg and coefficient of kinetic friction is 0.2. Block A slides down the incline at constant speed. The mass of the block B (in kg) is
- 5.4
- 3.3
- 4.2
- 6.8
Q. Two blocks m1 and m2 are resting on a rough inclined plane of inclination 37∘ as shown in figure. The contact force between the blocks is (m1=4 kg, m2=2 kg, μ1=0.8, μ2=0.5, g=10m/s2, sin37∘=35)
- 3.2 N
- 3.6 N
- 7.2 N
- Zero
Q. A block of mass 1 kg is placed on a rough incline as shown. The coefficient of friction between block and incline is 0.4. The acceleration of block is [g=10 ms−2, √3=1.7]
- Zero
- 1.6 ms−2
- 6.5 ms−2
- 5 ms−2
Q. A block of mass 1 kg is placed on a rough horizontal surface connected by a light string passing over two smooth pulleys as shown. Another block of 1 kg is connected to the other end of the string. The acceleration of the system is (coefficient of friction μ=0.2)
- 0.8g
- 0.4g
- 0.5g
- Zero
Q. A 60 kg body is pushed with just enough force to start it moving across a floor and the same force continues to act afterwards. The coefficients of static friction and sliding friction are 0.5 and 0.4 respectively. The acceleration of the body is
(Take g=10 m/s2)
(Take g=10 m/s2)
- 6 m/s2
- 4.9 m/s2
- 3.92 m/s2
- 1 m/s2