Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

when we push the car,workdineyis 0,how
Asked by vaniimtiyaz630 | 12 May, 2022, 12:19: AM
answered-by-expert Expert Answer
Workdone in physics = Force × ( part of displacement in same direction of force )
 
when we push the car, workdone against the gravitational force is zero because direction of gravitational force
and direction of displacement are mutually perpendicular .
 
Hence displacement in the direction of gravitational force is zero and workdone which is product of force
and displacement is zero.
 
When we push the car , our muscles applies the force nearly in horizontal direction parallel to earth surface.
Workdone by the force applied by muscles is not zero . This workdone equals product of force and displacement.
Answered by Thiyagarajan K | 12 May, 2022, 07:55: AM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 11-science - Physics
Can you tell an example about a body having 0 velocity and still accelerating?
Asked by veenasangeeth2020 | 30 Jan, 2024, 09:56: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
mention the expression for work done
Asked by abdulkhadirchajjo549 | 06 Dec, 2023, 06:55: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
During calculation of acceleration due to gravity above the surface of earth if we assume that there is an external force opposite to that of Earth's gravity then the cos angle will be 180 between the two forces which is negative(-1), if we put the value in the equation of dw = F.dx then the final value of potential energy is positive which is not possible.how and why??
Asked by anushkaverma.25707 | 24 Aug, 2023, 07:35: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
In the problem no. 34 of concepts of physics HC Verma-1 bit(a) , why is the acceleration of block B is half the acceleration of block A? And why is it that distance travelled by block B is half the distance travelled by block A?
question image
Asked by sakethrockzz007 | 04 Aug, 2023, 11:17: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
A small spherical object having density 2P is placed inside the liquid of density P and connected to an ideal string of length l whose other end is kept fixed so that the object can move in a vertical cirlcle, minimum speed which must be given at the bottom to just complete the vertical circle.
Asked by dhruvund8769 | 04 Feb, 2023, 11:41: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
when we push the car,workdineyis 0,how
Asked by vaniimtiyaz630 | 12 May, 2022, 12:19: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
explain about conservation of energy with problem
Asked by bandarirohinipriya | 08 Feb, 2022, 09:46: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
please solve the attached problem
question image
Asked by ayushmishradbb | 11 Jun, 2020, 09:07: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Can o get more number of conceptual questions???
Asked by mahanteshsurpur5 | 07 May, 2020, 08:13: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
plz elaborate by figure and step by step question no 5
question image
Asked by Harshhacker2580 | 04 May, 2020, 05:32: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×