Practice Questions
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1. Click the picture that have a bigger MA.
Unknown-2.jpeg
MA = 77 / 7
Unknown-2.jpeg
MA = 125 / 5


2. If you take up a 400 newton (N) brick up an inclined plane with a force of 200N. What is the Mechanical Advantage of this inclined planed? Click the letter that is correct.
a) 30 b) 1

c) 2 d) 40

3. Zoe couldn't lift a 200N box of lego. She couldn't lift it though. she can't decide which simple machine would have a greater MA. Find which machine has a bigger MA and therefore is easier on Zoe's muscles, then click the picture with the greater MA.

lever2.gif
Input force = 50
Unknown-2.jpeg
Input force = 100N


Bonus Questions

1 If a machine has a MA of 3 and an output force of 15N. What is the input force? Click the letter that is correct.

a) 7 b) 3
c) 5 d) 15

2. If a machine has a MA of 12 and an output force of 144. What is the input force? Click the letter that is correct.

a) 14 b)18
c)17 d)12