4 cm 8 cm 5 cm 1 cm M 2 cm 4 cm 5g In the figure, what mass M is required to balance the mobile? 60 g ○ 36 g 30 g 18 g ○ 90 g

A 20 kg child and a 30 kg child are sitting on an 4 m long see-saw. Where should the fulcrum be placed so the two children balance?   2.2 m from the 30 kg child 2.4 m from the 20 kg child 1.2 m from the 20 kg child 3 m from the 30 kg child

Consider the shelf in the figure. Suppose all supports fail and only O is working properly; if the shelf does not move, what must be the mass of the flowerpot on the left?

The diagram shows a uniform bar supported at the middle point O. A weight of 40 gf is placed at a distance 40cm to the left of the point O. How can you balance the bar with a weight of 80 gf? 50 40 gf 40 30 20 10 10 20 30 40 O 50 cm

Big Sister and Little Brother are balanced on a see-saw.  Big Sister sits a distance of 1.13m away from the center of the see-saw and Little Brother sits a distance of 1.97m away from the center of the see-saw.  The total mass of the two children is 57.0kg.  Little Brother has a mass of __________kg .

A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. With two 6.56 g coins stacked over the 20.5 cm mark, the stick is found to balance at the 32.4 cm mark. What is the mass of the meter stick? Number Units

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The figure shows a set of blocks, each with identified masses. Estimate where a pivot should be placed beneath the lowest block so that the system would balance in equilibrium. 1.5 m 6 kg 5 kg 2 kg 2 m O 0-- 0.5 m 0.5 -- 1 m O 1-- 1.5 m O 1.5 -- 2 m

A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. With two 5.95 g coins stacked over the 32.4 cm mark, the stick is found to balance at the 46.5 cm mark. What is the mass of the meter stick?     Number Type your answer here Units

A bar weighs 8 N and is 5 m in length. What is the weight needed (M) to balance the bar? Don't forget the weight of the bar itself Answer Options: 6.5N,8N,7.5,8.5N A bar weighs 8 N and is 5 m in length. What is the weight needed (M) to balance the bar? Don't forget the weight of the bar itself! 7N 3 m 5m 1m (balance point) 8N M