Muscular Force

Q.

What is muscular force ? Give one example of muscular force.

Q.

How does an applied force change the speed of an object

Q.

What is the ratio of electrostatic force and gravitational force between a proton and electron at 1 mm distance?

Mass of proton – $1.67\times {10}^{-27}kg$

Mass of electron – $9.11\times {10}^{-31}kg$

Charge of electron – $1.6\times {10}^{-19}C$

1. 10³⁹

2. 10⁴⁰

3. 10⁴¹

4. 10³⁸

Q.

State the factors on which moment of force about a point depends

Q.

Name the type of forces involved in the following :

(a) A horse pulling a cart.

(b) A sticker attached to steel almirah without glue.

(c) A coin falling to the ground on slipping from hand.

(d) A plastic comb rubbed in dry hair picking up tiny pieces of paper.

(e) A moving boat coming to rest when rowing is stopped.

Q.

Which force do the animals apply while moving, chewing and doing other activities?

Q.

Whatis difference between force and moment of force (3 points)

And differences between Force and pressure (3 points)

Q.

Pushing an object is an example of _________ force (contact or muscular force).

Q.

. Name the force acting on a plastic bucket containing water held above ground level in your hands, Discuss why the forces on the bucket do not bring a change in its state of motion.

Q. Dear sir/Ma'am
I have a problem in this question
Q. A load suspended from a spring and its other end is on a hook fix to a wall , in this case mechanical force is acting ?

Q.

List of contact and non -contact forces

Q. What is muscular force?

1. Force due to gravity
2. Force due to charges
3. Force resulting due to action of muscles
4. Force resulting due to rubbing

Q.

A meteor burns due to the heat of the earth's atmosphere. Then how is a rocket able to escape this heat while leaving and entering the atmosphere and also it doesn't burn? How

Q.

Contact and non contact forces in nature?

Q.

What is the difference between attractive and repulsive force?

Q.

The force produced by the muscles of living beings is called muscular force.

1. True
2. False

Q.

What type of force do you require to move a book kept on a table?

1. Muscular force

2. None of these

3. Jedi force

4. Mental force

Q.

Write true or false.

All forces are contact forces.

1. True
2. False

Q.

Question 5 (b)
In the following situations identify the agent exerting the force and the object on which it acts. State the effect of the force in each case.
(b)Taking out paste from a toothpaste tube.

Q. A 2kg box sits on a 3 kg box which sits on 5 kg box . The 5 kg box rests on table . What is the normal force exerted on 5 kg box by the table top ?

Q. Which of the following real life examples does not involve the use of muscular force?

1. Kicking a football
2. Squeezing a sponge ball
3. Breathing in and out
4. Meteor hitting Earth

Q. What is the relative strength of fundamental forces?

Q.

Which of the following is not an example of muscular force ?
(a) a porter carrying a load on a wheel-barrow. (b) an apple falling from a tree.
(c) a child riding a bicycle. (d) a person drawing water from a well.

Q.

Two objects repeal each other. What are the possible repulsions?

Q.

Question 18
A chapati maker is a machine which converts balls of dough into chapatis. What effect of force comes into play in this process?

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?

Q.

Question 2
Give two examples of situations in which applied force causes a change in the shape of an object

Q. Muscular force is a type of

1. magnetic force
2. mechanical force
3. electrostatic force
4. gravitational force

Q.

Muscular force can

1. Change the state of motion of an object

2. Change the shape of an object

3. Both A and B

4. Neither A and B

Q.

Why does a blacksmith use a heavier hammer than a goldsmith?