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Questions and answers by
Linda Emory
Questions (7)
To move a Boulder use a 2x4 board as a lever and a small rock act as a fulcrum what would be good to try ? Move the fulcrum rock
5 answers
138 views
Whenever you use an inclined plane. De is greater than dr?
3 answers
126 views
What is the effect of using an inclined plane to lift an object?
5 answers
164 views
When lifting a bag of sugar up to the shelf.First one shelf then lifted to the second shelf higher shelf based on the numbers
5 answers
133 views
A rail road crossing barricade has a counter weight, what is the mail purpose of the counter weight?
7 answers
119 views
160J of work was needed in order to move an object 8m across a floor. What was the force (in N) that was needed to do this job?
3 answers
105 views
You set up a pulley to help you lift something. You anchor the rope at one end and arrange a move able pulley to achieve a
5 answers
134 views
Answers (14)
Yes use the leverage of the plane and small rock as a close to the Boulder with the plane under the Boulder and the small rock as the fulcrum. Push down on the lever moves the boulder.
Place the small rock under the 2x4 and near the Boulder and push down on the plane to move the Boulder. Be careful, maintain balance and stability.
De is less 5han dr.
Early examples of ability to lift things is Stonehenge and Easter Island.
It decreases the amount of applied force necessary.
It is the same.
Yes it is the same in either case.
Easier to lift and the operator is caused less strain.
Makes reduce the amount of work needed to lift the bar.
To controlled movement smooth when raised or lowered.
Yes 20N
10m yes 2x5m=10m.
10m.(D)
Yes The cart will be easier to pull, in spite of the weight of the board, because now the angle of pull is much closer to the angle of movement.
