Q. What force would be required to accelerate a 10 kg bowling ball at a rate of 3 m s2?
Given a mass of 10kg and an acceleration of 3ms2 , we can calculate the net force on the bowling ball from the above equation. Therefore, 30N of force is required to accelerate the bowling ball down the alleyway at a rate of 3ms2 .
Q. What is the force needed to accelerate an 1200.0 kg car to 4.0 m/s 2?
Answer: 1200 kg*9.8 m/s^2 = 11760 N. b. Disregarding friction, what force must the car motor apply to accelerate the car along a level highway at the rate of 4.0 m/s^2? Answer: 11760 N/4.0 m/s^2 = 2940 kg.
Q. How much force is needed?
The force (F) required to move an object of mass (m) with an acceleration (a) is given by the formula F = m x a. So, force = mass multiplied by acceleration.
Q. What is work and give its unit?
Work : Work can be defined as the product of the force (F) and the distance (s) moved along the direction of the force. Work done = Force × displacement = F × s. [This formula is used in only translatory motion of the object] 1) Work is a scalar quantity. 2) Unit of work is ‘N – m’ or ‘Joule’ (J).
Q. What are the major types of works?
First, let’s take a look at the five kinds of work we do every day:
- Reactionary Work.
- Planning Work.
- Procedural Work.
- Insecurity Work.
- Problem-Solving Work.
Q. Is it correct to say work is done every time force is applied?
If a force is applied but the object doesn’t move, no work is done; if a force is applied and the object moves a distance d in a direction other than the direction of the force, less work is done than if the object moves a distance d in the direction of the applied force.
Q. When we push a wall no work is done?
Answers and Solutions Question: Explain why no work is done when a man tries to push a wall? Answer: Even though the man exerts force on the wall , the wall does not move. Work done = force applied * displacement and since the displacement of the wall is zero. , work done is also zero.
Q. Is pushing a wall work done?
Answer. Answer: even though the man exerts force on the wall , the wall does not move . work done = force applied * displacement and since the displacement of the wall is zero . , work done is also zero .
Q. Is pushing on a wall doing work?
Work is said to be done when force is applied on an object and it gets displaced from its initial position. SI unit of work is Joules. 1 Joule is defined as 1 newton force is applied on an object and it gets displaced by 1 m distance. This represents that no work is done when force is applied on a wall.
