Recent content by pennywise1234

The question is more geared towards when trying to improve stability or how do stability and torque correlate. I was thinking it had to do with Centre of mass or base of support. I have no idea what could be said for ergonomics

1. The problem statement what role does torque play in body stability and ergonomics ?

yes it does, but how do I know when the dynamic is greater than the static? Is there a calculation? or is it usually said in the problem thanks

Homework Statement The static co-efficient of friction between a football blocking sled (90 kg) and grass is 0.56. (i) If an80 kg coach stands on top of the blocking sled, what is the maximal static frictional force?(ii) Will the dynamic co-efficient of friction between the sled (with the coach...

so 3kn, because every action has equal and opposite reaction. thank you

Homework Statement A high jumper with a body weight of 800N exerts a force of 3 kN against the ground during takeoff. How much force is exerted by the ground on the high jumper? Homework Equations f=m x a a=f/m The Attempt at a Solution I converted 800n into KN giving me 0.8 I then divided...

i have fs(max) = c0efficient of static friction x normal force x 9.81

i do not, i was curious to find out which one to use? do i have to find the net force?

im also stuck on static frictional force question The static co-efficient of friction between a football blocking sled (90 kg) and grass is 0.56. (i) If an80 kg coach stands on top of the blocking sled, what is the maximal static frictional force? any hints on the formula to apply?

so f= 30 x 1.6=48 110-48=62N correct ? subtract because it moving in the negative direction, right?

Homework Statement You pull on a 30 kg box with a horizontal force of 110 N to the right. (i) If there are no other forces acting on this box, what is the resulting acceleration? (ii) If the resulting acceleration of the block is only 1.6 m/s, what is the magnitude and direction of the...

I am trying to find displacement though

y=o represents initial velocity. but it is not known like you said, so that is how i was able to get 11.05 but setting initial to 0

yes, sorry

i used y=0 + 0.5 x (-9.81) x (1.5s)Square root is what i meant to put