Wednesday

April 16, 2014

April 16, 2014

Posted by **alex** on Tuesday, February 28, 2012 at 10:26am.

along the floor. The lifter applies a force of 850 N downwards on the block

at an angle of 65° to the vertical (25° to the horizontal). The weightlifter

pushes the block forwards 4 m in 1.6 s. Calculate the power output of the

weightlifter when moving the block 4 m forwards. [10 marks]

- physics -
**Henry**, Thursday, March 1, 2012 at 11:58amF = 850N @ 25 Deg.

Fx = 850*cos25 = 770.4 N. = hor. Force.

Fy = 850*sin25 = 359.2 N. = Ver. force.

P = Fx*V = Fx * (d/t).

P=770.4 * (4/1.6) = 1926 J/s=1926 J/s =

1926 Watts.

**Related Questions**

science - a weightlifter raises a 200-kg barbell with an acceleration of 3 m/s. ...

MAths algebra - ON day 1 each atheletic will begin the morning as follows Jog =3...

physics - A man pushes on a piano of mass 180 so that it slides at a constant ...

physics - A weightlifter holding a 500 kg barbell waist high carries the barbell...

systems analysis task - 1.Jesse wants to see a context diagram and a diagram 0 ...

systems analysis design task - Tasks: 1. Jesse wants to see a context diagram ...

schedules - I am having trouble with making a schedule for my classroom.The ...

physics - two kids push on a 10kg box. one pushes 100N to the west and the other...

Physics - Three men are trying to move a wardrobe. One pushes northward with a ...

physics - A pushes with force of 300 N at 25 degrees. B pushes with force of 275...