Easy Problems

An object has a normal force of $76N.$ The coefficient of friction is $0\mathrm{.}96.$ What is the weight?

An object with a weight of $885N$ is on a surface with a friction force of $105N.$ What is the coefficient?

The coefficient of friction between two surfaces is $0\mathrm{.}83.$ The weight of an object is $29$ What is the frictional force?

A $4kg$ object is on a surface. The coefficient of friction between the object and surfac is $0\mathrm{.}8.$

a$)$ What is the weight?

b$)$ What is the normal force?

c$)$ What is the friction force?

A $22kg$ bear is laying on the ground. The Friction force between his body and the ground is $87N.$

a$)$ What is the weight?

b$)$ What is the normal force?

c$)$ What is the coefficient of friction?

A fridge with $425N$ of weight is sliding across the floor with a friction force of $90N.$

a$)$ What is the mass?

b$)$ What is the normal force?

c$)$ What is the coefficient of friction between the fridge and floor?

Dynamics Worksheet $5$

A $1\mathrm{.}5kg$ shopping cart is moving in the grocery store. The coefficient of friction betwe the wheels and floor is $0\mathrm{.}4.$

a$)$ What is the weight?

b$)$ What is the normal force?

c$)$ What is the friction force?

A dog running has a weight of $33N.$ The friction force in its paws is $11N.$

a$)$ What is the normal force on the dog?

b$)$ What is the coefficient of friction?

c$)$ What is the mass?

Hard Problems

A $13kg$ cart is being pushed left with $88N.$ Friction between the cart and floor is $39N$

a$)$ Draw a FBD$.($Hint: $4$ arrows$)$

b$)$ Determine the net force.

c$)$ What is the acceleration?

d$)$ What is the coefficient of friction?