What does a pulley system need in order to reduce the force needed to lift an object?
A. exact...
Physics, 06.04.2020 22:08, katiebotts18
What does a pulley system need in order to reduce the force needed to lift an object?
A. exactly one pulley that has a fixed position
B. No pulley system can reduce the force needed to lift an object.
C. at least one movable pulley
D.
a load that is not too heavy
Answers: 3
Physics, 22.06.2019 07:40, sanafarghal
Which lists the fundamental forces in order, from strongest to weakest? strong nuclear, weak nuclear, electromagnetic, gravitational strong nuclear, electromagnetic, weak nuclear, gravitational gravitational, weak nuclear, electromagnetic, strong nuclear electromagnetic, gravitational, strong nuclear, weak nuclear
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Physics, 22.06.2019 09:20, Geo777
Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ยฝ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers
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