Respuesta :
Answer:
3543N OR 3540 N IN 3 SIGNIFICANT NUMBERS
Explanation:
Let F be the force which lifts body upward
in downward direction weight of the body acts .
weight = mass ×acceleration due to gravity
weight, W = 300×9.81=2943N
Now net force acting on body is F-W and according to second law of motion
F-W = m a where F is force W is weight m is mass and a is acceleration
F-2943=300×2
F = 600+2943
F = 3543N or 3540 in 3 significant figures
Answer:
Total force is 3600N
Explanation:
The forces acting on the body are: the force causing upward motion and the downward force due to the weight of the body.
Upward force F=ma
m=300kg, a=2m/s2
F=300*2
=600N
Downward force F=mg
m=300kg, g=10m/s2
F=300*10
=3000N
The total force needed to lift the load is:
3000+600=3600N
