Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
secondary 3 | A Maths
One Answer Below
Anyone can contribute an answer, even non-tutors.
Can someone explain why the ans key is c and not d?
Date Posted: 4 years ago
Views: 586
Work done = force x distance travelled by force
Since you are applying an upward force similar in magnitude as the weight, the distance should consider is the upward distance not the diagonal distance.
Similarly, if a person weighs 50kg, weight of 500N. The work done for running up the stairs will be 500 x vertical distance not the actual distance travelled.
Hope this clarifies
Since you are applying an upward force similar in magnitude as the weight, the distance should consider is the upward distance not the diagonal distance.
Similarly, if a person weighs 50kg, weight of 500N. The work done for running up the stairs will be 500 x vertical distance not the actual distance travelled.
Hope this clarifies
See 1 Answer
360 Tutoring Program