Newton's Second Law

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 $m_1=5.0kg$ and $m_2=15kg$. What is the tension in the rope?
Take the value of $g=10m{s}^{-2}$

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 $30m{s}^{-1}$ in $10seconds$. The mass of the car is $1500kg$.

1. $4000N$
2. $3500N$
3. $4500N$
4. $3000N$

Q.

According to Newton's second law of motion, force is directly proportional to the rate of change of momentum provided

1. velocity of body remains constant

2. mass of body remains constant

3. acceleration of body remains constant

4. speed of body remains constant

Q.

Newton's second law of motion gives us the mathematical expression of force.

1. True

2. False

Q.

It is easier to stop a $60g$ tennis ball as compared to a $150g$ cricket ball, both having the same velocity.

1. True
2. False

Q.

An airplane accelerates on the runway at $3.0m{s}^{-2}$. It has two engines which exert a total thrust of $3.0\times$ ${10}^{5}N$. What is the mass of this airplane?

1. $0.5\times$ ${10}^{5}kg$

2. $2.0\times$ ${10}^{5}kg$

3. $3.0\times$ ${10}^{5}kg$

4. $1.0\times$ ${10}^{5}kg$

Q. An object moves with an acceleration of $3{ms}^{-2}$ when a force of $30N$ is applied. The mass of the body is:

1. $30kg$
2. $40kg$
3. $10kg$
4. $20kg$