A block and pulley containing 5 pulley is used to brace load of 400N through a height of 10m of work done against friction is 1000
Calculate the
Work done by effort
Efficiency
Effort appiled
5 pullies means the effort distance is 5 times the load distance
Work done by effort ... (400 N * 10 m) + 1000 J = 5000 J
Efficiency ... (4000 J / 5000 J) * 100% = ?
Effort applied ... 5000 J / (5 * 10 m) = ? N