Questions
A 198 cm tall girl lies on a light (massless) board which is supported by two scales one under the top of her head and one beneath the bottom of her feet (Figure). The two scales read respectively 36 and 30 kg. What distance is the centre of gravity of this girl from the bottom of her feet?
detailed solution
Correct option is C
Let the required distance is x, then balancing the torque about centre of gravity:(30g)x=(36g)(198−x ) ⇒x=108 cmTalk to our academic expert!
Similar Questions
Equilibrium of two Planks on a Rough Plane: Figure shows two planks inclined to horizontal rough surface and connected by a string. Find the minimum angle (in degrees) for which this system remain in equilibrium if friction coefficient is = 0.5.
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests