2006-07-06 17:55:35 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Physics
work is dot product of force vector and displacement vector. w=f.s so w=fscos(a) where 'a' is the angle between force vector and displacement vector. work is zero for a=90(or odd multiples of 90 degree), f=0 or s=0 (ie no displacement)
2006-07-06 18:13:36 · answer #1 · answered by imfamouspersonality 1 · 0⤊ 0⤋
When one object looses energy then there is always a corresponding increase of enetrgy in the surrounding object.
Energy transfer is in many forms.
In Phsyics whenever there is a change in MECHANICAL ENERGY we say the transfer of energy as work.
It is measured by the product of the force and displacement or to its equivalent energy.
2006-07-07 03:53:37 · answer #2 · answered by Pearlsawme 7 · 0⤊ 0⤋
The above answer is correct only for constant force. The complete answer is the work is the integral (f(s)*ds). f(s) and ds are vectors and * is the dot product. This is also the energy used: work = energy.
2006-07-07 01:30:20 · answer #3 · answered by gp4rts 7 · 0⤊ 0⤋
work=joules
joules=force*distance
2006-07-07 01:00:37 · answer #4 · answered by Archangel 4 · 0⤊ 0⤋