Muscular Force

Q. What is a contact force? Give some examples.

Q.

Muscular force is a non-contact force.

1. True

2. False

Q.

Name any two types of contact forces?

Q.

What kind of force is exerted when you push a chair across a room?

Q.

Question 4 (b)
An archer stretches her bow while taking aim at the target. She then releases the arrow, which begins to move towards the target. Based on this information fill up the gaps in the following statements using the following terms:

muscular, contact, non-contact, gravity, friction, shape, attraction

(b) The force applied by the archer to stretch the bow is an example of ___ force.

Q. Muscular forces are called so because:

1. They are caused by the action of our muscles.

2. They are applied on muscles.

3. They need good muscles for their application.

4. Both A and B.

Q. What is a) Pseudo Force b) Conservative Force c)\:Non Conservative Force d) Dissipative Force e) Inertial Frame of Reference f) Non- Inertial Frame of Reference

Q. A force f acts on a block of mass m at an angle x. find minimum value of this force in case of pushing and pulling for moving body

Q.

Force which makes a direct contact with a body or acts through a connector is called:

1. direct force

2. contact force

3. prime force

4. none of these

Q.

When a ball is thrown vertically upwards it falls down ultimately. What force pulls the ball downwards?

1. Electrostatic
2. Magnetic
3. Gravitational
4. None of these

Q. What is a contact force?

Q.

Define contact force.

Q.

Muscular forces are called so because:

1. Both A and B.

2. They are applied on muscles.

3. They need good muscles for their application.

4. They are caused by the action of our muscles.

Q. A ball drops from some height (consider there is no air resistance).
Which of the following options is correct for the ball’s motion before hitting the ground?

1. Accelerate downward
2. Decelerate downward
3. Fall with constant velocity
4. Velocity will increase first and then decrease

Q.

Which of the following is/are contact force(s)?

1. 1, 3, and 4

2. 1 and 3

3. 2, 3 and 4

4. All of the above

Q. A person is walking on the road. Which of the following observation(s) is/are correct with respect to Newton's third law of motion?

1. The person is pushing the ground forward.
2. The ground is pushing the person backward.
3. The person is pushing the ground backward.
4. The ground is pushing the person forward.

Q. In a circus you might have seen an event in which a person lies down on a bed of sharp nails. Why do the nails not hurt the circus performer?