Request a call back

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

CBSE Class 11-science Answered

a boatman can row with a speed of 10 km/h in still water.if the river flows steadily at 5 km/h in
Asked by | 26 Jul, 2009, 12:55: AM
Expert Answer

Assume that the boatman has to go in a direction making an angle θ with the line joining starting and finishing points, i.e. OA as shown in the figure.

 

The resultant velocity should be along OA. Riverflow is in the direction shown i.e.  from left to right.

From the triangle shown, sin θ = (5 km/hr) / (10 km/hr) = 0.5.

Hence the direction, i.e. angle θ = 30 deg.

Regards
Team
TopperLearning

Answered by | 01 Aug, 2009, 03:19: PM
CBSE 11-science - Physics
Asked by pratikshyadashrkl | 01 May, 2020, 10:24: AM
ANSWERED BY EXPERT
CBSE 11-science - Physics
Asked by Madhurimaurya609 | 11 Jul, 2018, 08:14: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
Asked by Topperlearning User | 11 May, 2015, 01:59: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
Asked by Topperlearning User | 11 May, 2015, 02:13: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
Asked by Topperlearning User | 11 May, 2015, 02:26: PM
ANSWERED BY EXPERT

Start your hassle free Education Franchisee and grow your business!

Know more
×