2 uniform roods each or weight W and length L are welded together so that angel ABC is 90, the two rods are hanging in equilibrium from a fixed loin at A by a hinge which allows the rods to swing in a vertical plane. by taking the moments about the hinge find the angle that AB makes with the...
I need to clarify the forces acting on the bike in the first fig is the 10N force spinning the wheel anti clockwise? hence the bike is moving backwards?
Do the answers match the diagrams?
An astronaut weighs 1000N at the surface of the Earth of radius 6500 km, what his weight will be at 13000 km and 19500km from the centre of the earth?
Do I have to calculate the new value of g at 13000 km using the following?
(G• Mearth) / (Rearth)2
Where:
G = 6.673 x 10-11 N m2/kg2...
Stoboscopic effect and why!
if the frequency of the strobe is higher than the frequency of the water ripples then the ripples will appear to move slowly backwards.
can some one expain with formula's or with some technical trems why this happens?
i know if the strobe has higher frequency...