Newton's Second Law
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Q. Three identical blocks, each of mass 10 kg, are pulled as shown on the horizontal frictionless surface. If the tension (F) in the rope is 30N. What is the acceleration of each block? And what are the tensions in the other ropes?

Q. An Atwood machine is set up like the figure below. If m1=5.0kg and m2=15kg. What is the tension in the rope?
Take the value of g=10ms−2

Take the value of g=10ms−2
Q. Three identical blocks, each of mass 10 kg, are pulled as shown on the horizontal frictionless surface. If the tension (F) in the rope is 30N. What is the acceleration of each block? And what are the tensions in the other ropes?

Q. State Newton’s second law.
Q. Calculate the force required to accelerate a car from rest to a velocity of 30 ms−1 in 10 seconds. The mass of the car is 1500 kg.
- 4000 N
- 3500 N
- 4500 N
- 3000 N
Q.
According to Newton's second law of motion, force is directly proportional to the rate of change of momentum provided
velocity of body remains constant
mass of body remains constant
acceleration of body remains constant
- speed of body remains constant
Q.
Newton's second law of motion gives us the mathematical expression of force.
True
False
Q.
It is easier to stop a 60 g tennis ball as compared to a 150 g cricket ball, both having the same velocity. |
- True
- False
Q.
An airplane accelerates on the runway at 3.0 m s−2. It has two engines which exert a total thrust of 3.0× 105N. What is the mass of this airplane?
0.5× 105 kg
2.0× 105kg
3.0× 105kg
1.0× 105kg
Q. An object moves with an acceleration of 3 m s−2 when a force of 30 N is applied. The mass of the body is:
- 30 kg
- 40 kg
- 10 kg
- 20 kg