Question
a weightlifter raises a 200-kg barbell with an acceleration of 3 m/s. How much force does the weightlifter use to raise the barb?
Answers
MathMate
To maintain the weight at the same place, the force required is mg.
To accelerate upwards at acceleration a=3m/s², he/she must apply an additional force of ma.
So the total force is
m(g+a) N
where
m=mass of weight
g=acceleration due to gravity
a=acceleration upwards.
To accelerate upwards at acceleration a=3m/s², he/she must apply an additional force of ma.
So the total force is
m(g+a) N
where
m=mass of weight
g=acceleration due to gravity
a=acceleration upwards.
Anonymous
400kg
tyree
A weightlifter raises a 200-kg barbell through a height of 2 m in 2.2 s. The average power he develops during the lift is
Idk
40000 kg
t
400
Audi
IT would take the force of 400 N