How much force applied on other end of lever to lift rock
A bar and fulcrum lever is being used to lift a 100lb rock. The lever is 10ft and the fulcrum is 2 ft from the rock. How much force must be applied on the other end of the the lever to lift the rock.
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The lever is 10ft and the fulcrum is 2 ft from the rock. How much force must be applied on the other end of the lever to lift the rock.
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A researcher conducts a study of white and black attitudes toward the police in her community. The percentage of white respondents (N = 300) who say they have a favorable attitude toward the police is 55% with a 95% confidence interval of +/- 5.6%
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