# physics

posted by .

A 22 kg box rests on the back of a truck. The
coefficient of static friction between the box
and the truck bed is 0.369.
The acceleration of gravity is 9.81 m/s2 .
What maximum acceleration can the truck
have before the box slides backward

• physics -

Wb = mg = 22kg * 9.8N/kg = 215.6N. =
Weight of box.

Fb = (215.6N,0 deg).

Fp = Fh = 215.6sin(0)= 0 = Force paral-
lel to plane = Hor. force.

Fv = 215.6cos(0) = 215.6N. = Force perpendicular to plane = Normal.

Ff = u*Fv = 0.369 * 215.6 = 79.56N. =
Force due to friction.

Fn = Fp - Ff = 22a,
0 - 79.56 = 22a,
a = -3.62m/s^2.

• physics -

Post it.

## Similar Questions

1. ### Physics

A box rests on the back of a truck. The coefficient of static friction between the box and the bed of the truck is 0.300. (a) When the truck accelerates forward, what force accelerates the box?
2. ### physics

A large box is loaded into the very back of a pickup truck and is not tied down. The truck then goes down the road at 20.0 m/s. The coefficient of static friction is 0.80 and the coefficient of kinetic friction is 0.45 between the …
3. ### Physics

A box rests on the back of a truck. The coefficient of static friction between box and bed of the truck is 0.255. (a) When the truck accelerates forward, what force accelerates the box?
4. ### physics

A crate of mass 45.0 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the truck's flatbed is 0.360, and the coefficient of kinetic friction is 0.160. (a) The truck accelerates …
5. ### Physics

A 35 kg box rest in the bed of a truck. The coefficient of static friction between the box and the truck bed is 0.30 and the coefficient of friction of kinetic friction is 0.10. A) Calculate the maximum acceleration the truck can have …
6. ### Physics

A crate of mass 43 kg is loaded onto the back of a flatbed truck. The coefficient of static friction between the box and the truck bed is 0.47. What is the maximum acceleration a (in m/s2) the truck can have without the crate sliding …
7. ### physics

7.–/3 points SerCP9 4.P.063.My Notes Question Part Points Submissions Used A box rests on the back of a truck. The coefficient of static friction between box and bed of the truck is 0.355. (a) When the truck accelerates forward, …
8. ### physics

A box rests on the back of a truck. The coefficient of static friction between box and bed of the truck is 0.355. (a) When the truck accelerates forward, what force accelerates the box?
9. ### Physics

A 570 kg truck is carrying a large 1.9 kg box on its cargo deck when it starts to accelerate. If the coefficient of static friction between the box and the truck’s deck is 0.26, what is the maximum acceleration, in m/s 2, that the …
10. ### Physics

A pickup truck is carrying a toolbox, but the rear gate of the truck is missing, so the box will slide out if it is set moving. The coefficients of kinetic and static friction between the box and the bed of the truck are 0.340 and …

More Similar Questions