H2P-62
Contact forces
H2 Physics · JC 1 · Medium · Contact forces
A 50 kg crate is lowered slowly into a lake using a crane. When fully submerged, the upthrust on the crate is 400 N. Take g = 9.8 m s⁻². Find the tension in the cable when the crate is at rest under water.
- 90 N
- 400 N
- 490 N
- 890 N
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