Posted by **Krystal** on Sunday, February 5, 2012 at 1:02pm.

A 40kg block is pushed along a level surface with a 200 N force at an angle of 35 degrees below the horizon. The coefficient of kinetic friction between the block and the surface is 0.15.

What is the normal force acting on the block?

What is the force of friction?

What is the acceleration of the block?

- Physics -
**Henry**, Tuesday, February 7, 2012 at 11:57am
Wb = mg = 40kg * 9.8N/kg = 392 N. = Wt.

of block.

Fb = 392 N. @ 0 Deg.

Fp = 392*sin(0) = 0 = Force parallel to

surface.

Fv = 392*cos(0) = 392 N. = Force perpendicular to surface.

a. Fv' = Fv + Fap*sinA,

Fv' = 392 + 200*sin35 = 507 N. = Normal

force.

b. Fk = u*Fv' = 0.15 * 507 = 76 N. =

Force of kinetic friction.

c. Fn = Fap*cos35 - Fp - Fk,

Fn = 200*cos35 - 0 - 76 = 87.8 N. = Net

applied force.

a = Fn/m = 87.8 / 40 = 2.2 m/s^2.

## Answer This Question

## Related Questions

- Physics - A force of 40 N is applied at an angle of 30oabove the horizon to a 5 ...
- Physics HELP! - A block of mass 3 kg slides along a horizontal surface while a ...
- Anyone ??? Physics - In the figure below, block 1 of mass m1 = 3.0 kg and block ...
- Physics help needed - In the figure below, block 1 of mass m1 = 3.0 kg and block...
- physics - A 450 g block is at rest on a horizontal surface. The coefficient of ...
- Physics - A 10 kg block is pushed across a rough surface by a 25N force the ...
- physics - A 450 g block is at rest on a horizontal surface. The coefficient of ...
- PHYSICS - A 50KG BLOCK IS BEING PULLED BY a 200-N FORCE ON A HORZONTAL ROUGH ...
- PHYSICS - A 50KG BLOCK IS BEING PULLED BY a 200-N FORCE ON A HORZONTAL ROUGH ...
- physics - A 4.00 kg block is pushed along the ceiling with a constant applied ...

More Related Questions