Stubborn screws would be better with a long handle screw driver because it gives you more torque. A paint can would be better with the thick one because more energy would go the lid as the screwdriver wouldn't bend as much.
For calculating work, the force and the distance must be in the same direction
Explanation:
The work done by a force on an object is given by the equation
where
F is the magnitude of the force
d is the displacement
is the angle between the direction of the force and of the displacement
The equation can be rewritten as
where is the component of the force parallel to the displacement of the object. This means that when calculating the work, only the component of the force parallel to the motion of the object contributes to the work: in this sense, we can say then for work to be different from zero, the force must have a component in the same direction as the motion of the object.
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G=(G*M)/r²
g-acceleration due the gravity, g=?
G-the universal gravitational constant, G=6.673x10^(-11)N*m²/kg²
M-the mass of the earth, M=5.98x10^(24)kg
r-the radius of the earth, r=6370km=6370000m
g=(6.673x10^(-11)N*m²/kg²)*(5.98x10^(24)kg)/(6370000m)²
g=9.834m/s²
Answer:
The answer is A
Explanation:
Work done = mgh
where mass, m = 92kg, g= 9.81, height,h= 325m
Therefore,
W= mgh
W=92*9.81*325
W=293319
W=2.93*10>5