# What does a 25kg chair initially at rest on a horizontal floor require?

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## What does a 25kg chair initially at rest on a horizontal floor require?

A 25 kg chair at rest on a horizontal floor requires 165 N of horizontal force to set it in motion. Once the chair is in motion, a 127 N horizontal force keeps it moving at a constant velocity.

## When using a horizontal force of 200n we intend to move a wooden cabinet across the floor at a constant velocity?

The cabinet will move with constant velocity only when the net force on it is zero. Therefore, the force of friction on the cabinet = 200 N, in a direction opposite to the direction of motion of the cabinet. Q. Using a horizontal force of 200 N, we intend to move a wooden cabinet across a floor at a constant velocity.

## What is the formula for kinetic friction?

Static Friction | Kinetic Friction |
---|---|

The equation representing static friction is given by F s = μ s η | The equation representing kinetic friction is given by F k = μ k η |

## When the crate is moving what is the kinetic friction force?

## How much work is required when a 52 kg box rests on the floor?

Hence, the work done is 1800 Joules.

## What is net force class 9?

Net force is the sum of all forces acting on an object. The net force can be calculated using Newton’s second law, which states that F = ma, where: F is the net force. m is the mass of the object.

## When you move a table across the floor what force must your push be stronger than?

Sliding Friction While static friction keeps an object at rest, sliding friction slows down an object that slides. If you push an object across a room, you notice the sliding friction between the bottom of the object and the floor. You have to keep pushing to overcome the force of sliding friction.

## When a horizontal force of 200N is applied on a body?

Step by step video & image solution for When a horizontal force of 200N is applied on a body,the acceleration product in it Is 1.5ms^(-2) .

## What are 3 types of kinetic friction?

- (1) Static friction. It is the friction, experienced by a body, when at rest.
- (2) Dynamic friction. It is the friction, experienced by a body, when in motion. …
- (a) Sliding friction. …
- (b) Rolling friction. …
- (c) Pivot friction. …
- 14.7. …
- 14.7. …
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## How do you find K in physics?

As a formula, it reworks Hooke’s Law and is expressed through the equation: k = – F/x. Where k is the spring constant, F is the force applied over x, and x is the displacement by the spring expressed in N/m.

## What is the SI unit of kinetic friction?

Clearly, Kinetic frictional force is a kind of force, thus its S.I. unit is the same as that of the force. Therefore the S.I. unit of Kinetic frictional Force = Newton (N).

## What is the example of kinetic friction in physics?

Whenever two surfaces slide past each other, there is kinetic friction. Kinetic friction is produced when brakes are applied to tires, when an object like a box slides across the ground, or when sandpaper is rubbed across a surface.

## What does the force of kinetic friction depend on?

Kinetic friction magnitude is directly proportional to the normal force magnitude and the roughness between the sliding surfaces. Static friction magnitude is directly proportional to the normal force magnitude and the roughness between the sliding surfaces.

## What is an example of kinetic friction causing motion?

Kinetic friction acts as a driving force when it comes to motion of a wheel, say in a bicycle where the friction acting backwards enables the road to propel the wheel forwards.

## What happens when you push horizontally on your book with a force of 1n to make the book slide at constant velocity?

Horizontally, your 1 N force acts to the right while the friction force acts to the left. If the book slides at constant velocity that means it moves with zero acceleration so the net forcemust be zero. Therefore, the friction force is also 1 N.

## When more horizontal force is applied to a sliding object than is needed to maintain a constant velocity?

If more horizontal force is applied to a sliding object than is needed to maintain a constant velocity, the object accelerates opposite the direction of the applied force.

## What is a horizontal force of 20n necessary to just hold?

A horizontal force of 20 N is necessary to just hold a block stationary against a wall. The coefficient of friction between the block and wall is 0.3.

## Is the force of friction equal and oppositely directed to your 200 N push?

The force of friction is equal and oppositely directed to your 200-N push. According to Newton’s third law, the reaction force to your push is the force of friction.