L A worker drags a crate across a factory floor by pulling on a rope tied to the crate. The worker exerts a force of 443 Non
the rope, which is inclined at 38.0° to the horizontal. The floor exerts a horizontal resistive force of 106 N. If the weight of
the crate is 92.0 N calculate the acceleration of the crate in the vertical direction. Use g = 9.81 m/s2.

Apossible long term health effects of stress would be work

All are great precautions but you can still lift lighter and different muscles in between hard workdays. this keeps other muscles not usually used in shape.

//(b) both involve the use of levers;

Distance covered, s = 8ft - 4ft = 4 ftinitial velocity, u = 34 ft/sthe acrobat is moving upwards and therefore, a = -g = -9.81 m/s^2 = 32.19 ft/s^2applying equation of motion; s = ut -1/2gt^2then,4 = 34t -1/2*32.19t^24 = 34t - 16.095t^2rearranging; -16.095t^2 + 34t - 4 = 0solving the quadratic equation; t = {-34 +/- sqrt [34^2 - 4(-16.)]}/2(-16.095) = 1.06 +/- 0.93 = 0.13 or 1.99the acrobat will take 0.13 seconds to be at 8 ft above the ground. additionally, once at the maximum height, the acrobat will move down and be at the same spot (that is height) after 1.99 seconds moving down.