Simple machines

Question 1 of 10

A machine lifts a load of 300 N with an effort of 80 N. Find its mechanical advantage.

Question 2 of 10

A wheelbarrow is a lever of the

Question 3 of 10

A machine of velocity ratio 6 lifts a load of 400 N with an effort of 100 N. Find its efficiency.

Question 4 of 10

A machine lifts 600 N with an effort of 50 N. Its mechanical advantage is ___.

Question 5 of 10

A block and tackle pulley system has 3 pulleys and is used to raise a load of 600 N with an effort of 267 N. (a) Draw a labelled diagram. (b) Find the velocity ratio. (c) Find the mechanical advantage. (d) Find the efficiency. (e) Give two reasons why the efficiency is less than 100%.

Question 6 of 10

The velocity ratio of an inclined plane is

Question 7 of 10

A machine lifts a load of 200 N with an effort of 150 N. Find its mechanical advantage.

Question 8 of 10

A pair of scissors is a lever of the

Question 9 of 10

A machine lifts 400 N with an effort of 50 N. Its mechanical advantage is ___.

Question 10 of 10

The velocity ratio of a pulley system equals