Physics Dynamics Force #1

Question 1

What is the force of attraction between objects/bodies/masses called?

Accepted Answer

Gravity

Question 2

What is NOT true about the force of friction?

Accepted Answer

Kinetic Friction is stronger than Static Friction.

Question 3

What is the simple definition of force?

Accepted Answer

It is a push or a pull.

Question 4

What is the name of force of the ground pushing up on an object that is being pulled downwards.

Accepted Answer

The Normal Force

Question 5

Which of the following is NOT one of the fundamental forces of universe?

Accepted Answer

Temporal Inversion Force

Question 6

What is another name for Torque?

Accepted Answer

Leverage

Question 7

If a 120 lbs lady is wearing stilettos with a total surface area of 10 sq. in., the stress is

Accepted Answer

12 psi

Question 8

If you push a cart of half your mass forward with all the force you can then

Accepted Answer

it will push you back with the same amount of force.

Question 9

What force is normally transmitted through a string, rope or chain?

Accepted Answer

Tension

Question 10

Which force is invisible, has an infinite range and can be either repulsive or attractive?

Accepted Answer

Electric

Question 11

What is the force of friction if the normal force is 1000 N and the coefficient is 0.75?

Accepted Answer

750 N

Question 12

A fish weighs 10 lbs and is 5 feet from the fishing rod fulcrum. How much torque is needed?

Accepted Answer

50 ft-lbs

Question 13

An net unbalanced force of 5 000 N is applied to a 2 000 kg car. The acceleration is

Accepted Answer

2.5 m/s2

Question 14

What does a person of mass 50 kg weigh near the surface of the Earth?

Accepted Answer

110 lbs

Question 15

If the Avengers pull West with 100 000 N and the Hulk pulls East with 120 000 N then the result

Accepted Answer

is 20 000 N [East].

Question 16

How much force is provided by a bow stretched 2 feet if it has a stiffness of 30 lbs/ft?

Accepted Answer

60 lbs

Questions 16