Muscular Force

Q.

What is Muscular Force?

Q.

Which of the following is an example of contact force?

1. Magnetic force

2. Muscular force

3. Electrostatic force

4. Gravitational force

Q. Which type of force is applied in lifting the weights below?

1. Electrostatic force
2. Muscular force
3. Magnetic force
4. Gravitational force

Q.

Give two examples of muscular force.

Q.

Muscular force is a contact force

1. They need good muscles for their application.

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

Q.

What is the rotational analog of force? And its S.I unit.

Q.

Kicking a ball is an example of _____ force.

Q. Muscular force is a contact force.

1. True
2. False

Q. The force applied with the help of muscles is known as

1. muscular force
2. gravitational force
3. electrostatic force
4. frictional force

Q.

A weightlifter lifts the weight with the help of his hand and has to apply a large force to do this. The force(s) acting on the weights is/are _____

1. Frictional Force

2. Gravitational Force

3. Muscular force

4. Magnetic force

Q. Arrange the following basic forces in the increasing order of relative strength.
1. Gravitational force
2. Electromagnetic force
3. Weak nuclear force
4. Strong nuclear force

1. $1,2,3,4$
2. $1,3,2,4$
3. $4,2,3,1$
4. $4,1,2,3$

Q.

What is a centripetal force?

Q.

Put a pipe over the end of a wrench when trying to turn a stubborn nut on a bolt, to effectively make the wrench handle twice as long, you will increase the torque by

Q.

_______ force is required to move a body uniformly in a circle.

Q. State the effect produced by a force in the following cases :
(a) The sling of a rubber catapult is stretched
(b) A man pushes a heavy cart
(c) A player uses his stick to deflect the ball .
(d) A cyclist applies brakes
(e) A spring is compressed.

Q. Which of the following activities involve the application of muscular force?

1. Carrying a load

2. Lifting a weight

3. Lifting an iron object with a crane

4. Picking up pieces of paper with a plastic comb

Q. Animals make use of force to carry out physical tasks.

1. gravitational
2. muscular
3. magnetic

Q. ntA: in the presence of air resistance, if the ball is thrown vertically upwards then time of ascent is less than the time of descentn ntR: Force due to air friction always acts opposite to the motion of the bodyn ntn ntexplain me alson

Q. Which of the following statements is true about moment of force(torque)?

1. Torque is independent of the distance of the force from the pivot.
2. Torque and force have the same units.
3. Torque is measured in the units of newton.
4. Torque depends on the perpendicular distance of force from the pivot.

Q. What happened if there was no friction?

Q. A block of weight 30 N placed on a rough horizontal surface is being pushed with a constant force of 60 N. If the maximum static friction between block and surface is 50 N, then

खुरदरे क्षैतिज पृष्ठ पर रखे 30 N भार के एक गुटके को 60 N के नियत बल से धकेला जाता है। यदि गुटके तथा पृष्ठ के मध्य अधिकतम स्थैतिक घर्षण 50 N है, तब

1. The frictional force acting on the block is 60 N
   
   गुटके पर क्रियाशील घर्षण बल 60 N है
   
2. The block will not move
   
   गुटका गति नहीं करेगा
   
3. The block will move with increasing speed
   
   गुटका बढ़ती हुई चाल से गति करेगा
   
4. The block will move with constant speed
   
   गुटका नियत चाल से गति करेगा
   

Q. Forces can be categorised as:

1. gravity
2. non-gravity
3. non-contact
4. contact

Q.

Turning effect of force is____________.

Q.

How does torque differ from force?

Q.

Write the name of the turning effect of force about a pivot.

Q. A spring is stretched as shown in the given figure. Which of the following force appears in its coil?

1. Force of friction
2. Force of gravity
3. Force of tension
4. Both A and B

Q.

___ is a property by virtue of which a substance either attracts or repels the same substance.

1. Electricity

2. Magnetism

3. Motion

4. Reaction

Q. A block of weight 40 N placed on a rough horizontal surface is being pushed with a constant force of 50 N. If the maximum static friction between block and surface is 60 N, then

किसी खुरदरे क्षैतिज पृष्ठ पर रखे 40 N भार के एक गुटके को 50 N के नियत बल से धकेला जाता है। यदि गुटके तथा पृष्ठ के मध्य अधिकतम स्थैतिक घर्षण 60 N है, तब

1. The frictional force acting on the block is 60 N
   
   गुटके पर क्रियाशील घर्षण बल 60 N है
2. The block will not move
   
   गुटका गति नहीं करेगा
3. The block will move with increasing speed
   
   गुटका बढ़ती हुई चाल से गति करेगा
4. The block will move with constant speed
   
   गुटका नियत चाल से गति करेगा

Q. Animals are used to carry heavy loads from one place to another. Which of the following forces do you think helps them in doing this?

1. Muscular force
2. Gravitational force
3. Nuclear force
4. Electrostatic force

Q. Calculate the resistance offered by a lemon when an effort of 0 X 06 N is applied. The effort arm of a squeezer is 10 cm and load arm is 3 cm. Assume that the effort is applied at the end of the effort arm.

1. 0.2 N
2. 0.03 N
3. 0.1 N
4. 0.02 N