A raises 1 kg wt- to a height of 100 cm and holds it there 30 minutes- How much work has he performed-1times 9-8J1times 9-8times 30erg1times 9-8times 30times 60J1times 9-8times 30J

Question

Toppr Admin · Accepted Answer

Givenm-1-xA0-kgh-100-xA0-cm-1-xA0-mt-30-xA0-mitWork dont W- Force -x22C5- Displacement-xA0-Force apply to lift the mass - Weight of the body- 1-xD7-9-8 NFrom above equation-xA0- -xA0- -xA0- -xA0- -xA0- -xA0- -xA0- -xA0- -xA0- -xA0- -xA0- -xA0- -xA0-W-1-xD7-9-8-xD7-1-xA0-J-xA0- -xA0- -xA0- -xA0- -xA0- -xA0- -xA0- -xA0- -xA0- -xA0- -xA0- -xA0- -xA0-W-1-xD7-9-8-xA0-J-xA0-Option A

A man raises 1 kg wt. to a height of 100 cm and holds it there for 30 minutes. How much work has he performed?
$1 \times 9.8 J$
$1 \times 9.8 \times 30 e r g$
$1 \times 9.8 \times 30 \times 60 J$
$1 \times 9.8 \times 30 J$

Given
$m = 1 k g h = 100 c m = 1 m t = 30 m i t$

Work dont $W =$ Force $\cdot$ Displacement
Force apply to lift the mass = Weight of the body= $1 \times 9.8$ N
From above equation,
$W = 1 \times 9.8 \times 1 J$
$W = 1 \times 9.8 J$
Option A

A man raises 1 kg wt. to a height of 100 cm and holds it there for 30 minutes. How much work has he performed?1×9.8J1×9.8×30erg1×9.8×30×60J1×9.8×30J

Givenm=1 kgh=100 cm=1 mt=30 mitWork dont W= Force ⋅ Displacement Force apply to lift the mass = Weight of the body= 1×9.8 NFrom above equation, W=1×9.8×1 J W=1×9.8 JOption A

A man raises 1 kg wt. to a height of 100 cm and holds it there for 30 minutes. How much work has he performed?
$1 \times 9.8 J$
$1 \times 9.8 \times 30 e r g$
$1 \times 9.8 \times 30 \times 60 J$
$1 \times 9.8 \times 30 J$

Given
$m = 1 k g h = 100 c m = 1 m t = 30 m i t$

Work dont $W =$ Force $\cdot$ Displacement
Force apply to lift the mass = Weight of the body= $1 \times 9.8$ N
From above equation,
$W = 1 \times 9.8 \times 1 J$
$W = 1 \times 9.8 J$
Option A